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science 🔬 > Yellow Cards > Flashcards

Yellow Cards Flashcards

1
Q

What is an endothermic reaction?

A

An endothermic reaction is one in which energy is taken in, usually as heat.

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2
Q

What is an exothermic reaction?

A

An exothermic is one in which energy is given out, usually as heat or light.

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3
Q

Explosion
Ice pack
Fireworks
Photosynthesis

A

Exothermic
Endothermic
Exothermic
Endothermic

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4
Q

OH

A

Hydroxide

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5
Q

SO4

A

Sulphate

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6
Q

NO3

A

Nitrate

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7
Q

CO3

A

Carbonate

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8
Q

Carbon dioxide

A

1-carbon 2-oxygen

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9
Q

Calcium carbonate

A

1-calcium 1-carbon 3-oxygen

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10
Q

Magnesium sulphate

A

1-magnesium 1-sulphur 4-oxygen

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11
Q

What do you need for the fire triangle to work?

A

Oxygen,fuel and heat.

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12
Q 
Metal + chlorine becomes ...
Metal + oxygen becomes ...
Metal + sulphur becomes ... 
Metal + carbon + oxygen becomes ...
Metal + sulphur + oxygen becomes ...
A 
Metal chlorine.
Metal oxide.
Metal sulphate. 
Metal carbon dioxide .
Metal oxygen sulphate.
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13
Q

What are the number of electrons in each of the first three shells?

A

2 electrons
8 electrons
8 electrons

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14
Q

What can be identified by the group number?

A

Atomic mass and the proton number.

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15
Q

What are the uses of noble gases?

A

Lamps, neon lights and magnets.

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16
Q

Which type of reactions - combustion or thermal decomposition - is exothermic?

A

Combustion

17
Q

An element is made of…

A

An element is made of only one type of chemical element.

18
Q

An atom is the…

A

An atom is the smallest particle of a chemical element.

19
Q

What are the chemical symbol the magnesium, chlorine and sodium

A 
Magnesium = Mg
Chlorine = Cl
Sodium = Na

science 🔬 (6 decks)

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